Distinct functions of BRCA1 and BRCA2 in double-strand break repair.

Distinct functions of BRCA1 and BRCA2 in double-strand break repair.
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BRCA1和BRCA2在双链断裂修复中的不同功能。

DOI:
10.1186/bcr417
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发表时间:
2002
期刊:
Breast cancer research : BCR
影响因子:
--
通讯作者:
West SC
West SC
中科院分区:
其他
文献类型:
--
作者:
Liu Y;West SC

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携带BRCA突变的个体易患乳腺癌。BRCA 1和BRCA 2蛋白是同源重组和DNA断裂修复所必需的,这表明它们是协同作用的。然而,稳定的BRCA 1/BRCA 2复合物的直接证据尚未得到证实。相反,这两种蛋白质被发现是离散的,但可能是非排他性的复合物的组成部分,对修复至关重要。我们讨论了BRCA 1与BACH 1和BARD 1蛋白的相互作用,并认为BRCA 1突变的多效性可能与蛋白质-蛋白质相互作用的缺陷有关。相反,BRCA 2在DNA修复中的作用可能更多地由其与RAD 51重组酶的直接相互作用来定义。
Individuals carrying BRCA mutations are predisposed to breast cancer. The BRCA1 and BRCA2 proteins are required for homologous recombination and DNA break repair, leading to the suggestion that they act in concert. However, direct evidence of a stable BRCA1/BRCA2 complex has not been demonstrated. Rather, the two proteins have been found as constituents of discrete, but perhaps nonexclusive complexes that are critical for repair. We discuss the interaction of BRCA1 with the BACH1 and BARD1 proteins, and suggest that the pleiotropic nature of mutations in BRCA1 may be associated with defects in protein–protein interactions. In contrast, the role of BRCA2 in DNA repair may be more defined by its direct interaction with the RAD51 recombinase.
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